APA
Simpson George G (ed.), . (1945). The Principal Of The Classification And A Classification Of Mammals. NEW YORK: Bulletin Of The American Museum Of Natural History.
Chicago
Simpson George G (ed.), . 1945. The Principal Of The Classification And A Classification Of Mammals. NEW YORK: Bulletin Of The American Museum Of Natural History.
Harvard
Simpson George G (ed.), . (1945). The Principal Of The Classification And A Classification Of Mammals. NEW YORK: Bulletin Of The American Museum Of Natural History.
MLA
Simpson George G (ed.), . The Principal Of The Classification And A Classification Of Mammals. NEW YORK: Bulletin Of The American Museum Of Natural History. 1945.
TextPublication details: NEW YORK 1945 Bulletin Of The American Museum Of Natural HistoryUniform titles: 
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